Glossary - G

GIS

A Geographic Information System is a computer package that displays a map connected to a database. The package can typically combine features, such as roads and sewers, from different maps and overlay them on the same screen. To qualify as a GIS, such systems should also be able to reference a computer database for textual information, such as notes and dimensions, regarding features displayed on the map. Source: G1

GPS

The Global Positioning System is a network of satellites launched and maintained by the U.S. Department of Defense. The satellites continually beam radio signals that a GPS receiver can use to instantly determine its holder's position, with a high degree of accuracy, anywhere in the world. Source: G3